and tom, there's been so much talk leading up to tonight, trump asking if ted cruz is even eligible to be president because he was born in canada. is that expected to come out tonight? and is cruz ready to respond? >> reporter: well, david, i can tell you that trump has been hammering the birther issue for weeks now. and polls actually show this has hurt cruz. but when i spoke with the cruz campaign, they say, if this is brought up, if he's attacked, cruz is definitely going to fire back. david? >> all right, tom llamas on the campaign trail every step of the way. tom, thanks. and, on the democratic side tonight, new numbers coming in, showing hillary clinton with a razor-thin lead over bernie sanders in iowa, leading sanders by two points, down from a nine-point lead one month ago. the caucus, as i mentioned a moment ago, just 18 days away now. from the poll numbers to the to win. we are all still here tonight. but our cameras are in three three tickets that won the whole thing. were they individuals, were they groups?